Critical Technical Advantages
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Optimized for Pt100 Sensors: The TMT127 is specifically engineered for Pt100 resistance thermometers. By focusing on a single sensor type and a fixed range, the device ensures stable and precise signal conversion with minimal configuration overhead.
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High Ambient Temperature Stability: The transmitter maintains high accuracy across its entire operating temperature range. This internal compensation is crucial for maintaining measurement integrity in control cabinets that may experience significant heat buildup.
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Compact Cabinet Integration: With a housing width of only 22.5 mm, the TMT127 allows for space-saving installation on standard DIN rails (IEC 60715). This is particularly beneficial for large-scale projects requiring dozens of temperature points to be consolidated in a single panel.
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Safety and Failure Monitoring: Compliant with NAMUR NE 43, the transmitter automatically triggers a fault signal in the event of a sensor break or a short circuit. This ensures that the control system can immediately identify and react to a measurement failure.
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Galvanic Isolation: The device features built-in galvanic isolation between the input and output. This protects the sensitive control system from electrical interference, ground loops, and potential voltage spikes originating at the sensor.
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International Approvals: Despite its simple design, the TMT127 is fully certified for use in hazardous areas (ATEX Ex ia, FM IS, CSA IS). It also carries GL shipbuilding approval, making it suitable for marine and offshore applications.
Technical Performance Matrix
| Feature | 세부 정보 |
| Input | 1 x RTD Pt100 (Fixed range) |
| Output | 4 to 20 mA (Analog) |
| Accuracy | High precision over full ambient range |
| Housing Width | 22.5 mm (DIN rail mounting) |
| Safety Compliance | NAMUR NE 43 (Fault signaling) |
| EMC Compliance | NAMUR NE 21, CE |
| Galvanic Isolation | Yes |
Primary Applications
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Standardized Temperature Loops: Ideal for large-scale plants that use standardized Pt100 sensors and fixed temperature ranges across various utility systems.
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Control Cabinet Assembly: High-density temperature monitoring where multiple 4-20 mA signals are fed into a PLC or DCS from a centralized panel.
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Marine and Shipbuilding: Monitoring machinery and process temperatures on vessels where GL certification is required.
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Hazardous Area Measuring Points: Providing an intrinsically safe (Ex ia) interface for temperature sensors located in explosive gas or dust environments.
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Water and Wastewater: Reliable and cost-effective monitoring of water temperatures in treatment facilities and distribution networks.
